add tests for duplicate top-level structs

Author: grische

json-to-go.test.js

@@ -149,9 +149,38 @@ function test(includeExampleData) {
       );
     }
   }
+  console.log(includeExampleData ? "done testing samples with data" : "done testing samples without data")
+}
+
+function testFiles() {
+  const fs = require('fs');
+  const path = require('path');
+
+  const testCases = [
+    "duplicate-top-level-structs",
+  ];
 
-  console.log("done")
+  for (const testCase of testCases) {
+
+    try {
+      const jsonData = fs.readFileSync(path.join('tests', testCase + '.json'), 'utf8');
+      const expectedGoData = fs.readFileSync(path.join('tests', testCase + '.go'), 'utf8');
+      const got = jsonToGo(jsonData);
+      if (got.error) {
+        console.assert(!got.error, `format('${jsonData}'): ${got.error}`);
+      } else {
+        console.assert(
+          got.go === expectedGoData,
+          `format('${jsonData}'): \n\tgot:  ${quote(got.go)}\n\twant: ${quote(expectedGoData)}`
+        );
+      }
+    } catch (err) {
+      console.error(err);
+    }
+  }
+  console.log("done testing files")
 }
 
 test(false);
 test(true)
+testFiles()

tests/duplicate-top-level-structs.go

@@ -0,0 +1,35 @@
+type AutoGenerated struct {
+	Region Region `json:"region"`
+	Municipality Municipality `json:"municipality"`
+	Building Building `json:"building"`
+}
+type Identifier struct {
+	Type string `json:"type"`
+	ID int `json:"id"`
+}
+type Region struct {
+	Identifier Identifier `json:"identifier"`
+	Autonomous bool `json:"autonomous"`
+}
+type MunicipalityIdentifier struct {
+	Type string `json:"type"`
+	Name string `json:"name"`
+}
+type Municipality struct {
+	MunicipalityIdentifier MunicipalityIdentifier `json:"identifier"`
+}
+type Postal struct {
+	Type string `json:"type"`
+	ID int `json:"id"`
+}
+type Road struct {
+	Name string `json:"name"`
+	ID int `json:"id"`
+}
+type BuildingIdentifier struct {
+	Postal Postal `json:"postal"`
+	Road Road `json:"road"`
+}
+type Building struct {
+	BuildingIdentifier BuildingIdentifier `json:"identifier"`
+}

tests/duplicate-top-level-structs.json

@@ -0,0 +1,27 @@
+{
+  "region": {
+      "identifier": {
+          "type": "ISO 3166-1",
+          "id": 234
+      },
+      "autonomous": true
+  },
+  "municipality": {
+      "identifier": {
+          "type": "local",
+          "name": "Tórshavn"
+      }
+  },
+  "building": {
+      "identifier": {
+          "postal": {
+              "type": "local",
+              "id": 100
+          },
+          "road": {
+              "name": "Gríms Kambansgøta",
+              "id": 1
+          }
+      }
+  }
+}